2002 vw jetta

can someone please tell me what the black, plastic piece that fits under the bumper is called? mine is missing a screw and is actually torn and drags on the ground.i am trying to locate one at a junkyard but unsure what it’s called. thanks!

It’s called a splash guard.

Since I can’t see the part that you are referring to, it is also possible that this is a chin spoiler.